METHOD FOR THE DECARBOXYLATIVE HYDROFORMYLATION OF ALPHA, BETA- UNSATURATED CARBOXYLIC ACIDS
申请人:Rudolph Jens
公开号:US20110028746A1
公开(公告)日:2011-02-03
The present invention relates to a process for preparing aldehydes by reacting an α,β-unsaturated carboxylic acid or a salt thereof with carbon monoxide and hydrogen in the presence of a catalyst comprising at least one complex of a metal of transition group VIII of the Periodic Table of the Elements with at least one compound of the formula (I),
where Pn is pnicogen; W is a divalent bridging group having from 1 to 8 bridge atoms between the flanking bonds; R
1
is a functional group capable of forming at least one intermolecular, noncovalent bond with the —X(═O)OH group of the compound of the formula (I); R
2
, R
3
are each in each case optionally substituted alkyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl or together with the pnicogen atom and together with the groups Y
2
and Y
3
if present form an optionally fused and optionally substituted 5- to 8-membered heterocycle; a, b and c are each 0 or 1; and Y
1,2,3
are each, independently of one another, O, S, NR
a
or SiR
b
R
c
, where R
a,b,c
are each H or in each case optionally substituted alkyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl; and the use of the above-described catalyst for the decarboxylative hydroformylation of α,β-unsaturated carboxylic acids.
本发明涉及一种通过在过渡元素周期表第VIII族金属的至少一个配合物存在下,将α,β-不饱和羧酸或其盐与一氧化碳和氢反应制备醛的方法,所述配合物的化学式为(I),其中Pn为氮族元素;W为具有1到8个桥连原子的二价桥联基团;R1为能够与化合物的化学式(I)中的—X(═O)OH基团形成至少一种分子间非共价键的官能团;R2、R3在每种情况下均为可选择的取代烷基、环烷基、杂环烷基、芳基或杂芳基,或者与氮族原子以及Y2和Y3基团(如存在)一起形成一个可选择的融合和可选择的取代的5到8元杂环;a、b和c分别为0或1;Y1、2、3各自独立地为O、S、NRa或SiRbRc,其中Ra、b、c各自为H或可选择的取代烷基、环烷基、杂环烷基、芳基或杂芳基;以及上述催化剂用于α,β-不饱和羧酸的脱羧氢甲酰化。